BFD over LAG Design

BFD over LAG Design

You might face a situation where you’re considering establishing a LAG port (whether using LACP, manual configuration, etc.), or perhaps you’re planning a maintenance window and considering shutting down a link within a LAG port, assuming it won’t...
The Impact of BGP Update Delay

The Impact of BGP Update Delay

Consider a scenario where your network architecture features two redundant CE routers linked to two PE routers. In this setup, the PE routers are configured to transmit only the default route to the CE routers, particularly beneficial for Branch routers, which...
ECMP and Load Sharing on IP Fragments

ECMP and Load Sharing on IP Fragments

Here is how IP fragmentation works: A Router receives a large IP packet that exceeds the MTU of its egress interface. The router divides the packet into smaller fragments, each with a size that is equal to its interfaces MTU egress interface. The router sets the...
Multipath eiBGP Design Review

Multipath eiBGP Design Review

There are plenty of documents online discussing Multipath BGP, but few seem to address the need for using eiBGP for load sharing (ie. eBGP and iBGP at the same time). Overview of the topics covered in this review: Why and when do we need  eiBGP Multipath The pros...